4200985 has 4 divisors (see below), whose sum is σ = 5041188. Its totient is φ = 3360784.

The previous prime is 4200953. The next prime is 4200991. The reversal of 4200985 is 5890024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 767376 + 3433609 = 876^2 + 1853^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200985 - 2⁵ = 4200953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420094 + ... + 420103.

It is an arithmetic number, because the mean of its divisors is an integer number (1260297).

Almost surely, 2^4200985 is an apocalyptic number.

It is an amenable number.

4200985 is a deficient number, since it is larger than the sum of its proper divisors (840203).

4200985 is an equidigital number, since it uses as much as digits as its factorization.

4200985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840202.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 4200985 is about 2049.6304544966. The cubic root of 4200985 is about 161.3554765310.

The spelling of 4200985 in words is "four million, two hundred thousand, nine hundred eighty-five".